17:15 〜 18:45
[MAG32-P04] Urbanization Analysis Using Land Cover Maps: A Case Study of Area Around High-Speed Rail Taoyuan Station, Taiwan.
キーワード：Urbanization, SPOT satellite image, Land cover maps, High-Speed Rail Station
The process of urbanization is driven by various factors such as population growth, migration from rural to urban areas, economic development, and changes in land use patterns. This study focuses on the urbanization around the High-Speed Rail Taoyuan Station, which began construction from 2002 to 2006. The analysis involves studying land cover maps processed from SPOT satellite images at ten-year intervals, from 2001 to 2021.
Since the time period spans over 20 years, the specifications of the SPOT satellites differ across each generation, especially in spatial resolution. The data from 2001, acquired from SPOT-2/4, has a panchromatic resolution of 10 meters and a multi-band resolution of 20 meters. By 2021, data acquired from SPOT-6/7 shows an increase in panchromatic resolution to 1.5 meters, while the multi-band resolution increases to 6 meters. To mitigate the impact of these varying specifications on the results, we simplified the land cover classification into three categories: urban areas, water bodies, and vegetation fields. This simplification aims to minimize differences in results caused by resolution variations.
From the results, in 2001, prior to the beginning of construction on the High-Speed Rail Taoyuan Station, the region still had a large area covered with vegetation fields and water bodies. By 2011, five years after the completion of the station, urban areas had expanded substantially from 48.65 hectares in 2001 to 265.87 hectares, marking an increase of 217.22 hectares. However, there was a noticeable decrease in water bodies and vegetation fields. Water bodies decreased from 34.69 hectares in 2011 to 22.44 hectares, totaling a reduction of 12.25 hectares, while the area of vegetation fields decreased from 406.63 hectares in 2011 to 201.66 hectares, amounting to a reduction of 204.97 hectares. From 2011 to 2021, although the growth rate of urban areas slowed down, it still increased by 64.28 hectares. Unavoidably, the decline in water bodies and vegetation fields continued, with reductions of 2.69 hectares and 61.6 hectares, respectively. Overall, comparing the result between 2001 and 2021, the urban areas have increase by 281.5 hectares, while the water bodies and vegetation fields are decrease by 14.97 hectares and 266.57hectares.
With the completion of High-Speed Rail Taoyuan Station, a significant population has relocated to the region. In order to satisfy the basic needs of the inhabitants, water bodies and vegetation fields are being removed. Simultaneously, building structures are being constructed for residential, commercial, and educational purposes, while road construction is improving the traffic conditions between cities and further surrounding areas.
Since the time period spans over 20 years, the specifications of the SPOT satellites differ across each generation, especially in spatial resolution. The data from 2001, acquired from SPOT-2/4, has a panchromatic resolution of 10 meters and a multi-band resolution of 20 meters. By 2021, data acquired from SPOT-6/7 shows an increase in panchromatic resolution to 1.5 meters, while the multi-band resolution increases to 6 meters. To mitigate the impact of these varying specifications on the results, we simplified the land cover classification into three categories: urban areas, water bodies, and vegetation fields. This simplification aims to minimize differences in results caused by resolution variations.
From the results, in 2001, prior to the beginning of construction on the High-Speed Rail Taoyuan Station, the region still had a large area covered with vegetation fields and water bodies. By 2011, five years after the completion of the station, urban areas had expanded substantially from 48.65 hectares in 2001 to 265.87 hectares, marking an increase of 217.22 hectares. However, there was a noticeable decrease in water bodies and vegetation fields. Water bodies decreased from 34.69 hectares in 2011 to 22.44 hectares, totaling a reduction of 12.25 hectares, while the area of vegetation fields decreased from 406.63 hectares in 2011 to 201.66 hectares, amounting to a reduction of 204.97 hectares. From 2011 to 2021, although the growth rate of urban areas slowed down, it still increased by 64.28 hectares. Unavoidably, the decline in water bodies and vegetation fields continued, with reductions of 2.69 hectares and 61.6 hectares, respectively. Overall, comparing the result between 2001 and 2021, the urban areas have increase by 281.5 hectares, while the water bodies and vegetation fields are decrease by 14.97 hectares and 266.57hectares.
With the completion of High-Speed Rail Taoyuan Station, a significant population has relocated to the region. In order to satisfy the basic needs of the inhabitants, water bodies and vegetation fields are being removed. Simultaneously, building structures are being constructed for residential, commercial, and educational purposes, while road construction is improving the traffic conditions between cities and further surrounding areas.